package com.sankuai.inf.leaf.server.util;
import java.security.MessageDigest;

public class MD5 {

    /***
     * MD5加密 生成32位md5码
     *
     * @param inStr 待加密字符串
     * @return 返回32位md5码
     */
    public static String md5Encode(String inStr) {
        try {
            MessageDigest md5 = null;
            try {
                md5 = MessageDigest.getInstance("MD5");
            } catch (Exception e) {
                System.out.println(e.toString());
                e.printStackTrace();
                return "";
            }

            byte[] byteArray = inStr.getBytes("UTF-8");
            byte[] md5Bytes = md5.digest(byteArray);
            StringBuffer hexValue = new StringBuffer();
            for (int i = 0; i < md5Bytes.length; i++) {
                int val = ((int) md5Bytes[i]) & 0xff;
                if (val < 16) {
                    hexValue.append("0");
                }
                hexValue.append(Integer.toHexString(val));
            }
            return hexValue.toString();
        } catch (Exception e) {
            return null;
        }
    }
    
    public static String authHash(String password, String salt) {
        String str = password + salt;
        return md5Encode(str);
    }
}
